One side of a square flower bed is 12 feet long. how many plants are needed if they are to be spaced 12 inches apart around the outside of the bed?

One foot is equal to 12 inches. To be 12 inches apart, the first of parallel sides should each have 13. These would up to 26 flowers.

The second pair of parallel will each have 11 flowers which would add up to 22 flowers. This will make the total number of flowers outside the bed equal to 48. 

48 flowers

Answer choices: (-2,3) (-1,3) (0,0) (2,-2) (3,5)
And the inequalities are x-y≥-4, 2x-y≤5, 2y+x>1

graph the lines
x-y=-4
2x-y=5
2y+x=1
test if (0,0) is in the zone with original inequality
if it isn't, shade to other side
if it is, shad including (0,0)

if you have < or >, use dotted line
if you have ≤ or ≥, use solid line
first one, (0,0) is not, so shade where (0,0) Isn't
2nd equation, (0,0) is in, so shade wher (0,0) is
3rd equation, (0,0) is not, so shade wher (0,0) isnt

resulting graph included below
the triangle where all 3 graphs intersect is solution
as you can see, the solutins are (-1,3) and (3,5)
(-1,3) is a solution because it is on the line and the line is solid so it includes those values on the line